Only a few guards remained at the scene of the murder, and everyone else returned to the Metropolitan Police Department for a meeting.

"What the two murders have in common is that the victims are all women, and their husbands are suspected of committing major crimes." The Twilight Police Department posted photos of the victims on the whiteboard and wrote down their identities.

Toru Amuro raised his hand and asked, "Why do the police suspect that these two cases are related to serial murders?" ”

"Because shortly after the second murder, a well-known newspaper received a handwritten letter, and the language of the letter was very suggestive."

Handwritten letters? Suggestive? Everyone here was surprised that, in general, even if a letter was published provoking the police, the letter was either written by printing or cutting and pasting text from other newspapers and books. If you write by hand, you are likely to expose your handwriting or even your fingerprints.

"I know what everyone is thinking," the Twilight Police Department said, "and unfortunately, we didn't find any fingerprints or DNA on the letter, and the prisoner probably wrote it with gloves." ”

Mori Kogoro asked, "What is the content of the letter?" ”

The Twilight Police Department took out a transparent sealed bag, and inside was a blank piece of paper. He picked up the bag and read: "The punishment of the world has come, the demon is actually the guardian of the world, I want to purify the world, two evil people have been 'cleaned', and there will be more dirty people to be 'cleaned' in the future." ”

"Clean? Is it the meaning of killing? Seliang thought so.

"Perhaps, because two people have already been killed, and the suspects are their husbands, this teaser letter does not mention any murder, nor does it mention who the murderer is, but this letter happens to be only understood by us, and even if we do, we still can't release people without evidence to prove that the husbands of these two victims are not guilty."

The participants also got a scanned copy, and I have to say that the handwriting of the letter writer is still okay, at least not so sloppy.

"It's hard to find a prisoner even through handwriting comparison, and collecting handwriting samples in the first place is a very heavy job, and it may not be effective in the end." Toru Amuro said.

Amuro's case is a death case. The killer did not leave any clues to his origin when he committed the crime. Even if a letter was sent, the police could not find any breakthrough. As for finding the source of the letter or something, the police have done it a long time ago, and it has no effect.

After the meeting ended, Seliang sat in his place and remained motionless.

"Miss Seliang? Why don't you go back? Amuro saw that Sera was in a trance.

"Oh, I see," Shiliang smiled embarrassedly, "I think the most important thing is to prove the innocence of the victim's husband rather than finding the culprit, right?" ”

"It's true, the real murderer is at large, but the good people have a bad name, and the husband of the victim is also the victim, so it is unfair to them, but unless new evidence is found to prove that they are not the perpetrators, the police can't do anything." Amuro has seen a lot of this kind of thing, and he is not very anxious compared to Seliang.

Seliang said, "I have a solution, but I need help. ”

Toru Amuro's interest came up: "Really? Do you want me to help? ”

"Well, that's fine, but I'd like to call Conan too." Shiliang said with a smile.

The relationship between Amuro and Conan is much weaker than usual, but it is not as stiff as Ji Haihong. At Seliang's invitation, Conan is happy to go with her to the second crime scene.

The bodies had been removed, and now only dried blood remained at the scene of the crime, and the three men walked into the scene wearing shoe covers and gloves.

Conan observed that there was a lot of blood sprayed on the left wall of the bed, but there was little blood on the right wall. There was a gap in the blood stain on the door, indicating that the prisoner had blocked the splash of blood. In addition to the vacancy, there was a bloodstain on the door.

Lumps of blood flying to the door?

"Miss Seliang, do you have any way to prove that the prisoner is not the husband of this victim?" Amuro asked.

Seliang pulled out two bundles of string from the bag he was carrying, and said, "There is no blood in an area above the door, but there are blood stains underneath, which means that someone is blocking the splash of blood, and this person must be a prisoner." ”

Conan understood: "Is Sister Sera trying to do that?" ”

"Conan is really smart!"

Sera marked the edge of the bloodless area, and then, with the help of Toru Amuro, connected the mark to the position of the victim's head at the time of death. In the same way, Sera attached the string to the victim's head at another point in the bloodless area.

Amuro looked at Sera's expression of serious work and felt a kind of focused beauty. At the same time, I feel that this high school student really doesn't seem to be an amateur.

The detectives assigned by the Metropolitan Police Department have an unusual composure in the face of the murder scene, and can also come up with this method to clear the suspect's name.

Do you want to check her background?

"Mr. Amuro, hand me that roll of tape."

"Oh." Amuro came back to his senses and handed Sera a roll of white tape.

The two connecting lines formed a triangle with the door, and Sera stood between them with duct tape, and then made a mark on the floor - a cross was taped to it.

According to Seliang, the position of the cross is the position where the prisoner stood at the time of the crime.

"Miss Sera is so powerful that she can come up with such a way to recreate the scene when the criminal committed the crime!" Amuro praised.

Shiliang still rarely accepts praise, especially the praise of a handsome guy. So she was a little blushing and embarrassed.

Then, Sera prepares to recreate the scene at the time of the crime. She stood in the middle of two lines, holding a relatively long flashlight in her right hand. She gently waved her flashlight, imagining how to create such a blood stain on the wall. As she does so, Conan and Amuro discover that there is an emotion that has taken the place of Sera, and that Sera is not the kind of girl who is big and aggressive, but a mature and pious detective.

Reverent...... Is it respect for the dead?

After waving back and forth a few times, Sera noticed that something was wrong. She measured the width between the lines with both hands, and looked at the blood sprayed on the wall.

The first time the killer hits the victim, the victim's blood splashes. And depending on the force and angle of the prisoner's blow, the direction and speed of the blood splash will be different.

But when the prisoner wields the weapon a second time, the weapon should be covered in blood. This way, when swinging, the blood on the weapon should leave a trail of blood on the ceiling and the wall to the right.

But in those places, there was no – or very little blood.

Sera stared at the flashlight, his mind racing through the causes. She involuntarily reached out her left hand and placed the flashlight on her left hand.

When the left hand feels the weight of the flashlight, the conscience of the world is like a mirror, and the mouth is suddenly opened, and this feeling is very comfortable, just like the feeling of watching the sunrise on a cloudy day, and the moment when the clouds are cleared.

"I see!" Amuro understands Sera's purpose. He observed that the victim's husband was right-handed, while the murderer committed the crime with his left hand.

Sera waved the flashlight with her left hand, and the direction of the blood stains on the wall was almost exactly the same as the direction she waved the flashlight.

This was a favourable piece of evidence for the victim's husband, but it was not conclusive.

At this time, Conan, who had been observing the scene, said, "Don't you think this bloodstain on the door is strange? ”

Amuro and Sera's gaze shifted to the blood clot on the door, which was a large pool of blood. Was this left by the murder weapon, or was it splashed from the victim's head?

They need to be experimentally validated.

Return to the Metropolitan Police Department and temporarily requisition the bloodstain analysis room. This time, the trio not only had to wear shoe covers and gloves, but also white coats, masks, and goggles.

The staff brought a large bucket of "blood" to Shiliang, and also brought a simulated murder weapon.

"Sister Shiliang, what should I do next?" Conan really doesn't know much about this, most of what he learns is reasoning, and as for this kind of experiment-

Eh, after a long time, it turns out that he is just a theoretical talent⊙▽⊙?

Nerd ⊙▽⊙?

Sera picked up the simulated murder weapon and tried to create a blood stain of approximate shape on the oversized white paper in front of him. But no matter how she swung, throws, throws, or even smashes the murder weapon into the blood bucket and sprinkles it all over the ground, she can't make that shape.

Just when Shiliang was engrossed in the experiment, the two little followers who followed her were unlucky. They were still on guard when Sera used conventional means to create blood stains, but when Sera threw the things in his hand directly into the bucket, they were killed. Conan's white coat was covered in blood, and it looked like some kind of horror movie scene, and Toru Amuro was even more unlucky, with his pants and shoes stained with blood.

"There it is!"

Toru Amuro and Conan were taken aback by Sera's words. I saw Shiliang put his hand into the bucket, which was stained with blood.

Suddenly I felt that the world was so terrifying! Conan thought.

Amuro thinks this female detective is very powerful.

I saw that Shiliang pressed his palms on the paper with some natural and slightly fanatical feelings, but what the followers didn't expect was that the blood stains left behind this time were almost exactly the same as the blood stains on the door!

"Sister Shiliang, it turns out that you are the murderer!" Conan complained instantly.

"Eh!" Shiliang came to his senses and looked innocent, "Why am I a murderer?" ”

Conan now wants to beat himself up (self-inflicted), and he says, "No, no, no, I mean, Sister Sera is really good!" It turns out that this piece of blood on the door was left by the murderer! ”

This momentous discovery soon reached the ears of the Twilight Police Department, who immediately took someone to the scene to collect a blood sample, and then ordered the officers of the Forensic Division to take the sample back to the laboratory for analysis.

The results seemed disappointing, as the blood stains on the door and the victim's blood were both type O blood. But that's not all, the forensic doctor did another blood agglutination experiment. When a solution is added to the blood, the blood cells will stick together into a clump, which is called blood clotting. It is known that the victim's blood clotted very quickly, and in the piece of blood collected from the door, the blood clotted at a slower rate.

As for verifying the DNA between the two, it will take a few days. The method used by forensic medicine is a faster and more credible method. As long as the DNA comparison results come down, it is clear whether the victim's husband is guilty or not.

——TBC——

Preview of the next issue: Sera's performance makes people look at him with admiration, what will Amuro find out about Sera's background? Xiaolan and Kazuha found traces of prisoners? Stay tuned!